Stephen Sackur interviews Changhua Wu, Greater China Director, The Climate Group China's impressive economic performance may help to prevent a global slow-down, but what is the environmental cost? The government has made it clear that it will not curb emissions at the expense of growth. Changhua Wu is the Greater China Director of The Climate Group, a non-profit organisation dedicated to advancing business and government leadership on climate change. So what kind of action is she pressing for and how successful can she hope to be?